A230358 - cp's OEIS frontend

A230358 a(n) is the smallest number k > 0 such that k, k + 1, ... , k + n - 1 are nonprime numbers, but k + n is prime.

n	a(n)
0	2
1	1
2	9
3	8
4	25
5	24
6	91
7	90
8	119
9	118
10	117
11	116
12	115
13	114
14	527
15	526
16	525
17	524
18	889
19	888
20	1131
21	1130
22	1339
23	1338
24	1337
25	1336
26	1335
27	1334
28	1333
29	1332
30	1331
31	1330
32	1329
33	1328
34	9553
35	9552
36	15691
37	15690
38	15689
39	15688
40	15687
41	15686
42	15685
43	15684
44	19617
45	19616
46	19615

[2, 1, 9, 8, 25, 24, 91, 90, 119, 118, 117, 116, 115, 114, 527, 526, 525, 524, 889, 888, 1131, 1130, 1339, 1338, 1337, 1336, 1335, 1334, 1333, 1332, 1331, 1330, 1329, 1328, 9553, 9552, 15691, 15690, 15689, 15688, 15687, 15686, 15685, 15684, 19617, 19616, 19615]

cp's OEIS Frontend

A230358 a(n) is the smallest number k > 0 such that k, k + 1, ... , k + n - 1 are nonprime numbers, but k + n is prime.

Table of values

List of values